new to this site but not to hho generators. ive installed a few gens, with fair to good results. i have an 87 ford ford f 150 with a 300 ci 6 cylinder, it has 6 cells producing 18 amps, has a map sensor enhancer, and has lost 2 mpg, it lost 2 mpg with one cell and when i added the other 5 it hasn't helped. anyone had this issue?